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  <div class="headertitle"><div class="title">server_session_impl.hpp</div></div>
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<a href="ipc__shm_2src_2ipc_2session_2detail_2shm_2classic_2server__session__impl_8hpp.html">Go to the documentation of this file.</a><div class="fragment"><div class="line"><a id="l00001" name="l00001"></a><span class="lineno">    1</span><span class="comment">/* Flow-IPC: Shared Memory</span></div>
<div class="line"><a id="l00002" name="l00002"></a><span class="lineno">    2</span><span class="comment"> * Copyright 2023 Akamai Technologies, Inc.</span></div>
<div class="line"><a id="l00003" name="l00003"></a><span class="lineno">    3</span><span class="comment"> *</span></div>
<div class="line"><a id="l00004" name="l00004"></a><span class="lineno">    4</span><span class="comment"> * Licensed under the Apache License, Version 2.0 (the</span></div>
<div class="line"><a id="l00005" name="l00005"></a><span class="lineno">    5</span><span class="comment"> * &quot;License&quot;); you may not use this file except in</span></div>
<div class="line"><a id="l00006" name="l00006"></a><span class="lineno">    6</span><span class="comment"> * compliance with the License.  You may obtain a copy</span></div>
<div class="line"><a id="l00007" name="l00007"></a><span class="lineno">    7</span><span class="comment"> * of the License at</span></div>
<div class="line"><a id="l00008" name="l00008"></a><span class="lineno">    8</span><span class="comment"> *</span></div>
<div class="line"><a id="l00009" name="l00009"></a><span class="lineno">    9</span><span class="comment"> *   https://www.apache.org/licenses/LICENSE-2.0</span></div>
<div class="line"><a id="l00010" name="l00010"></a><span class="lineno">   10</span><span class="comment"> *</span></div>
<div class="line"><a id="l00011" name="l00011"></a><span class="lineno">   11</span><span class="comment"> * Unless required by applicable law or agreed to in</span></div>
<div class="line"><a id="l00012" name="l00012"></a><span class="lineno">   12</span><span class="comment"> * writing, software distributed under the License is</span></div>
<div class="line"><a id="l00013" name="l00013"></a><span class="lineno">   13</span><span class="comment"> * distributed on an &quot;AS IS&quot; BASIS, WITHOUT WARRANTIES OR</span></div>
<div class="line"><a id="l00014" name="l00014"></a><span class="lineno">   14</span><span class="comment"> * CONDITIONS OF ANY KIND, either express or implied.</span></div>
<div class="line"><a id="l00015" name="l00015"></a><span class="lineno">   15</span><span class="comment"> * See the License for the specific language governing</span></div>
<div class="line"><a id="l00016" name="l00016"></a><span class="lineno">   16</span><span class="comment"> * permissions and limitations under the License. */</span></div>
<div class="line"><a id="l00017" name="l00017"></a><span class="lineno">   17</span><span class="comment"></span> </div>
<div class="line"><a id="l00018" name="l00018"></a><span class="lineno">   18</span><span class="comment">/// @file</span></div>
<div class="line"><a id="l00019" name="l00019"></a><span class="lineno">   19</span><span class="comment"></span><span class="preprocessor">#pragma once</span></div>
<div class="line"><a id="l00020" name="l00020"></a><span class="lineno">   20</span> </div>
<div class="line"><a id="l00021" name="l00021"></a><span class="lineno">   21</span><span class="preprocessor">#include &quot;<a class="code" href="src_2ipc_2session_2detail_2shm_2classic_2session__impl_8hpp.html">ipc/session/detail/shm/classic/session_impl.hpp</a>&quot;</span></div>
<div class="line"><a id="l00022" name="l00022"></a><span class="lineno">   22</span><span class="preprocessor">#include &quot;<a class="code" href="session_2detail_2shm_2classic_2classic__fwd_8hpp.html">ipc/session/detail/shm/classic/classic_fwd.hpp</a>&quot;</span></div>
<div class="line"><a id="l00023" name="l00023"></a><span class="lineno">   23</span><span class="preprocessor">#include &quot;<a class="code" href="ipc__session_2src_2ipc_2session_2detail_2server__session__impl_8hpp.html">ipc/session/detail/server_session_impl.hpp</a>&quot;</span></div>
<div class="line"><a id="l00024" name="l00024"></a><span class="lineno">   24</span><span class="preprocessor">#include &lt;boost/move/make_unique.hpp&gt;</span></div>
<div class="line"><a id="l00025" name="l00025"></a><span class="lineno">   25</span><span class="preprocessor">#include &lt;utility&gt;</span></div>
<div class="line"><a id="l00026" name="l00026"></a><span class="lineno">   26</span> </div>
<div class="line"><a id="l00027" name="l00027"></a><span class="lineno">   27</span><span class="keyword">namespace </span><a class="code hl_namespace" href="namespaceipc_1_1session_1_1shm_1_1classic.html">ipc::session::shm::classic</a></div>
<div class="line"><a id="l00028" name="l00028"></a><span class="lineno">   28</span>{</div>
<div class="line"><a id="l00029" name="l00029"></a><span class="lineno">   29</span> </div>
<div class="line"><a id="l00030" name="l00030"></a><span class="lineno">   30</span><span class="comment">// Types.</span></div>
<div class="line"><a id="l00031" name="l00031"></a><span class="lineno">   31</span><span class="comment"></span> </div>
<div class="line"><a id="l00032" name="l00032"></a><span class="lineno">   32</span><span class="comment">/**</span></div>
<div class="line"><a id="l00033" name="l00033"></a><span class="lineno">   33</span><span class="comment"> * Core internally-used implementation of shm::classic::Server_session: it is to the latter what its `public`</span></div>
<div class="line"><a id="l00034" name="l00034"></a><span class="lineno">   34</span><span class="comment"> * super-class Server_session_impl is to #Server_session.</span></div>
<div class="line"><a id="l00035" name="l00035"></a><span class="lineno">   35</span><span class="comment"> *</span></div>
<div class="line"><a id="l00036" name="l00036"></a><span class="lineno">   36</span><span class="comment"> * @see shm::classic::Server_session doc header which covers both its public behavior/API and a detailed sketch</span></div>
<div class="line"><a id="l00037" name="l00037"></a><span class="lineno">   37</span><span class="comment"> *      of the entire implementation.</span></div>
<div class="line"><a id="l00038" name="l00038"></a><span class="lineno">   38</span><span class="comment"> *</span></div>
<div class="line"><a id="l00039" name="l00039"></a><span class="lineno">   39</span><span class="comment"> * ### Impl notes ###</span></div>
<div class="line"><a id="l00040" name="l00040"></a><span class="lineno">   40</span><span class="comment"> * The use of app_shm() and session_shm(), and various public APIs around them, is totally symmetrical with</span></div>
<div class="line"><a id="l00041" name="l00041"></a><span class="lineno">   41</span><span class="comment"> * shm::classic::Client_session_impl; so that all is in super-class Session_impl.  We do what&#39;s asymmetrical:</span></div>
<div class="line"><a id="l00042" name="l00042"></a><span class="lineno">   42</span><span class="comment"> * assigning session_shm() and app_shm() values; and provide the server-specific APIs (notably</span></div>
<div class="line"><a id="l00043" name="l00043"></a><span class="lineno">   43</span><span class="comment"> * async_accept_log_in()).</span></div>
<div class="line"><a id="l00044" name="l00044"></a><span class="lineno">   44</span><span class="comment"> *</span></div>
<div class="line"><a id="l00045" name="l00045"></a><span class="lineno">   45</span><span class="comment"> * To implement app_shm() assignment we share a member map (from Client_app to `Arena`)</span></div>
<div class="line"><a id="l00046" name="l00046"></a><span class="lineno">   46</span><span class="comment"> * in the &quot;parent&quot; (emitting) shm::classic::Session_server -- after all it did have to create such a handle,</span></div>
<div class="line"><a id="l00047" name="l00047"></a><span class="lineno">   47</span><span class="comment"> * in create-only mode, possibly even during `pre_rsp_setup_func()` (if the opposing Client_app is</span></div>
<div class="line"><a id="l00048" name="l00048"></a><span class="lineno">   48</span><span class="comment"> * encountered the first time by that server).  So we just access it through shm::classic::Session_server::app_shm(),</span></div>
<div class="line"><a id="l00049" name="l00049"></a><span class="lineno">   49</span><span class="comment"> * passing-in the relevant Client_app; and save that pointer to be returned by app_shm().</span></div>
<div class="line"><a id="l00050" name="l00050"></a><span class="lineno">   50</span><span class="comment"> *</span></div>
<div class="line"><a id="l00051" name="l00051"></a><span class="lineno">   51</span><span class="comment"> * (Why jump through such hoops?  Couldn&#39;t we simply `OPEN_OR_CREATE` it ourselves; after all the OS would</span></div>
<div class="line"><a id="l00052" name="l00052"></a><span class="lineno">   52</span><span class="comment"> * then essentially implement the map for us in the kernel, and we needn&#39;t all the boiler-plate?  Answer:</span></div>
<div class="line"><a id="l00053" name="l00053"></a><span class="lineno">   53</span><span class="comment"> * That&#39;s fantastic and superior; except the shm::classic::Pool_arena thus created could not live past `*this`;</span></div>
<div class="line"><a id="l00054" name="l00054"></a><span class="lineno">   54</span><span class="comment"> * which would break the contract of shm::classic::Session::app_shm() as listed in its doc header.)</span></div>
<div class="line"><a id="l00055" name="l00055"></a><span class="lineno">   55</span><span class="comment"> *</span></div>
<div class="line"><a id="l00056" name="l00056"></a><span class="lineno">   56</span><span class="comment"> * session_shm(), however, is simple.  We just `CREATE_ONLY` it, as its lifetime by definition equals the</span></div>
<div class="line"><a id="l00057" name="l00057"></a><span class="lineno">   57</span><span class="comment"> * session&#39;s (`*this`).</span></div>
<div class="line"><a id="l00058" name="l00058"></a><span class="lineno">   58</span><span class="comment"> *</span></div>
<div class="line"><a id="l00059" name="l00059"></a><span class="lineno">   59</span><span class="comment"> * @tparam S_MQ_TYPE_OR_NONE</span></div>
<div class="line"><a id="l00060" name="l00060"></a><span class="lineno">   60</span><span class="comment"> *         See shm::classic::Server_session counterpart.</span></div>
<div class="line"><a id="l00061" name="l00061"></a><span class="lineno">   61</span><span class="comment"> * @tparam S_TRANSMIT_NATIVE_HANDLES</span></div>
<div class="line"><a id="l00062" name="l00062"></a><span class="lineno">   62</span><span class="comment"> *         See shm::classic::Server_session counterpart.</span></div>
<div class="line"><a id="l00063" name="l00063"></a><span class="lineno">   63</span><span class="comment"> * @tparam Mdt_payload</span></div>
<div class="line"><a id="l00064" name="l00064"></a><span class="lineno">   64</span><span class="comment"> *         See shm::classic::Server_session counterpart.</span></div>
<div class="line"><a id="l00065" name="l00065"></a><span class="lineno">   65</span><span class="comment"> */</span></div>
<div class="line"><a id="l00066" name="l00066"></a><span class="lineno">   66</span><span class="keyword">template</span>&lt;schema::MqType S_MQ_TYPE_OR_NONE, <span class="keywordtype">bool</span> S_TRANSMIT_NATIVE_HANDLES, <span class="keyword">typename</span> Mdt_payload&gt;</div>
<div class="line"><a id="l00067" name="l00067"></a><span class="lineno"><a class="line" href="classipc_1_1session_1_1shm_1_1classic_1_1Server__session__impl.html">   67</a></span><span class="keyword">class </span><a class="code hl_class" href="classipc_1_1session_1_1shm_1_1classic_1_1Server__session__impl.html">Server_session_impl</a> :</div>
<div class="line"><a id="l00068" name="l00068"></a><span class="lineno">   68</span>  <span class="keyword">public</span> <a class="code hl_class" href="classipc_1_1session_1_1shm_1_1classic_1_1Session__impl.html">Session_impl</a></div>
<div class="line"><a id="l00069" name="l00069"></a><span class="lineno">   69</span>           &lt;session::Server_session_impl&lt;S_MQ_TYPE_OR_NONE, S_TRANSMIT_NATIVE_HANDLES, Mdt_payload,</div>
<div class="line"><a id="l00070" name="l00070"></a><span class="lineno">   70</span>                                         schema::ShmType::CLASSIC,</div>
<div class="line"><a id="l00071" name="l00071"></a><span class="lineno">   71</span>                                         transport::struc::shm::Builder_base::S_MAX_SERIALIZATION_SEGMENT_SZ&gt;&gt;</div>
<div class="line"><a id="l00072" name="l00072"></a><span class="lineno">   72</span>{</div>
<div class="line"><a id="l00073" name="l00073"></a><span class="lineno">   73</span><span class="keyword">public</span>:</div>
<div class="line"><a id="l00074" name="l00074"></a><span class="lineno">   74</span>  <span class="comment">// Types.</span></div>
<div class="line"><a id="l00075" name="l00075"></a><span class="lineno">   75</span><span class="comment"></span> </div>
<div class="line"><a id="l00076" name="l00076"></a><span class="lineno">   76</span><span class="comment">  /// Short-hand for our non-`virtual` base.</span></div>
<div class="line"><a id="l00077" name="l00077"></a><span class="lineno"><a class="line" href="classipc_1_1session_1_1shm_1_1classic_1_1Server__session__impl.html#a7eb8811c0dfc0f25f2b5cb5acd0ff90d">   77</a></span><span class="comment"></span>  <span class="keyword">using </span><a class="code hl_class" href="classipc_1_1session_1_1shm_1_1classic_1_1Session__impl.html">Base</a> = <a class="code hl_class" href="classipc_1_1session_1_1shm_1_1classic_1_1Session__impl.html">Session_impl</a></div>
<div class="line"><a id="l00078" name="l00078"></a><span class="lineno">   78</span>                 &lt;<a class="code hl_class" href="classipc_1_1session_1_1Server__session__impl.html">session::Server_session_impl</a>&lt;S_MQ_TYPE_OR_NONE, S_TRANSMIT_NATIVE_HANDLES, Mdt_payload,</div>
<div class="line"><a id="l00079" name="l00079"></a><span class="lineno">   79</span>                                               schema::ShmType::CLASSIC,</div>
<div class="line"><a id="l00080" name="l00080"></a><span class="lineno">   80</span>                                               <a class="code hl_variable" href="classipc_1_1transport_1_1struc_1_1shm_1_1Builder__base.html#a2dae5df49d355c6f2199af42fff9befd">transport::struc::shm::Builder_base::S_MAX_SERIALIZATION_SEGMENT_SZ</a>&gt;&gt;;</div>
<div class="line"><a id="l00081" name="l00081"></a><span class="lineno">   81</span> </div>
<div class="line"><a id="l00082" name="l00082"></a><span class="lineno">   82</span>  <span class="comment">// Constructors/destructor.</span></div>
<div class="line"><a id="l00083" name="l00083"></a><span class="lineno">   83</span><span class="comment"></span> </div>
<div class="line"><a id="l00084" name="l00084"></a><span class="lineno">   84</span><span class="comment">  /// Inherit ctor.</span></div>
<div class="line"><a id="l00085" name="l00085"></a><span class="lineno">   85</span><span class="comment"></span>  <span class="keyword">using </span><a class="code hl_class" href="classipc_1_1session_1_1Server__session__impl.html">Base::Base</a>;</div>
<div class="line"><a id="l00086" name="l00086"></a><span class="lineno">   86</span><span class="comment"></span> </div>
<div class="line"><a id="l00087" name="l00087"></a><span class="lineno">   87</span><span class="comment">  /**</span></div>
<div class="line"><a id="l00088" name="l00088"></a><span class="lineno">   88</span><span class="comment">   * See Session concept counterpart; but read on for notes on per-session SHM-pool cleanup.</span></div>
<div class="line"><a id="l00089" name="l00089"></a><span class="lineno">   89</span><span class="comment">   *</span></div>
<div class="line"><a id="l00090" name="l00090"></a><span class="lineno">   90</span><span class="comment">   * In particular this dtor shall perform (if `*this` is opened OK)</span></div>
<div class="line"><a id="l00091" name="l00091"></a><span class="lineno">   91</span><span class="comment">   * shm::classic::Pool_arena::remove_persistent() on the pool returned by Session_impl::session_shm()</span></div>
<div class="line"><a id="l00092" name="l00092"></a><span class="lineno">   92</span><span class="comment">   * (the per-session pool).  Reminder: like all kernel-persistent `remove_persistent()` methods this will not</span></div>
<div class="line"><a id="l00093" name="l00093"></a><span class="lineno">   93</span><span class="comment">   * necessarily free the RAM held on behalf of the pool; any currently opened `Pool_arena`s -- presumably</span></div>
<div class="line"><a id="l00094" name="l00094"></a><span class="lineno">   94</span><span class="comment">   * one still (possibly) held by the counterpart shm::classic::Client_session_impl -- will continue to function</span></div>
<div class="line"><a id="l00095" name="l00095"></a><span class="lineno">   95</span><span class="comment">   * fine.</span></div>
<div class="line"><a id="l00096" name="l00096"></a><span class="lineno">   96</span><span class="comment">   *</span></div>
<div class="line"><a id="l00097" name="l00097"></a><span class="lineno">   97</span><span class="comment">   * ### Rationale for aforementioned `remove_persistent()` op ###</span></div>
<div class="line"><a id="l00098" name="l00098"></a><span class="lineno">   98</span><span class="comment">   * Why do it?  Answer: Naturally this should be freed sometime; otherwise the RAM will leak, even though the</span></div>
<div class="line"><a id="l00099" name="l00099"></a><span class="lineno">   99</span><span class="comment">   * session pertaining to the per-session pool is gone.</span></div>
<div class="line"><a id="l00100" name="l00100"></a><span class="lineno">  100</span><span class="comment">   *</span></div>
<div class="line"><a id="l00101" name="l00101"></a><span class="lineno">  101</span><span class="comment">   * Why not do it earlier?  Answer: It would be nice to do it super-early... like, say, just after creating the</span></div>
<div class="line"><a id="l00102" name="l00102"></a><span class="lineno">  102</span><span class="comment">   * pool during the async portion of async_accept_log_in().  The only reason *not* to do it is if the client</span></div>
<div class="line"><a id="l00103" name="l00103"></a><span class="lineno">  103</span><span class="comment">   * handle (`Pool_arena`) to the pool has not yet had a chance to get opened by the name deleted via</span></div>
<div class="line"><a id="l00104" name="l00104"></a><span class="lineno">  104</span><span class="comment">   * `remove_persistent()`.  The opening occurs in the counterpart shm::classic::Client_session_impl during the</span></div>
<div class="line"><a id="l00105" name="l00105"></a><span class="lineno">  105</span><span class="comment">   * log-in procedure, initiated on this side by async_accept_log_in().  However, as of this writing, the async</span></div>
<div class="line"><a id="l00106" name="l00106"></a><span class="lineno">  106</span><span class="comment">   * portion of async_accept_log_in() (at least when there are no init-channels) completes just after</span></div>
<div class="line"><a id="l00107" name="l00107"></a><span class="lineno">  107</span><span class="comment">   * creating the SHM-pool -- upon sending the log-in response message; it does not wait for any ack from</span></div>
<div class="line"><a id="l00108" name="l00108"></a><span class="lineno">  108</span><span class="comment">   * the client.  While in practice the client side will indeed open the pool quite soon after we send</span></div>
<div class="line"><a id="l00109" name="l00109"></a><span class="lineno">  109</span><span class="comment">   * the log-in response, we don&#39;t know exactly when that is.  Hence we postpone it until this dtor, at which</span></div>
<div class="line"><a id="l00110" name="l00110"></a><span class="lineno">  110</span><span class="comment">   * point the session is definitely done-for.  (We could do it earlier, perhaps by adding the ack from client,</span></div>
<div class="line"><a id="l00111" name="l00111"></a><span class="lineno">  111</span><span class="comment">   * but this way is solid if less zealous.)</span></div>
<div class="line"><a id="l00112" name="l00112"></a><span class="lineno">  112</span><span class="comment">   *</span></div>
<div class="line"><a id="l00113" name="l00113"></a><span class="lineno">  113</span><span class="comment">   * Why not do it later?  Answer: Session is done-for, if we are being invoked; the counterpart `Client_session`</span></div>
<div class="line"><a id="l00114" name="l00114"></a><span class="lineno">  114</span><span class="comment">   * could not possibly hope to open the pool now, even if it somehow wanted to do so.  So why wait?</span></div>
<div class="line"><a id="l00115" name="l00115"></a><span class="lineno">  115</span><span class="comment">   *</span></div>
<div class="line"><a id="l00116" name="l00116"></a><span class="lineno">  116</span><span class="comment">   * ### What if this dtor never runs? ###</span></div>
<div class="line"><a id="l00117" name="l00117"></a><span class="lineno">  117</span><span class="comment">   * In any program that exits without aborting abruptly, it *will* run.  Furthermore the proper behavior</span></div>
<div class="line"><a id="l00118" name="l00118"></a><span class="lineno">  118</span><span class="comment">   * (see Session::~Session() doc header) is to either invoke the Session dtor proactively (graceful exit triggered</span></div>
<div class="line"><a id="l00119" name="l00119"></a><span class="lineno">  119</span><span class="comment">   * locally) or in response to an error (triggered by client counterpart ending session and our detecting this).</span></div>
<div class="line"><a id="l00120" name="l00120"></a><span class="lineno">  120</span><span class="comment">   * If the user follows this recommended behavior, then this dtor will run just as soon as it should.</span></div>
<div class="line"><a id="l00121" name="l00121"></a><span class="lineno">  121</span><span class="comment">   * If not, then it will at least run when the program is exiting gracefully.</span></div>
<div class="line"><a id="l00122" name="l00122"></a><span class="lineno">  122</span><span class="comment">   *</span></div>
<div class="line"><a id="l00123" name="l00123"></a><span class="lineno">  123</span><span class="comment">   * It however may not run due to abrupt termination (a crash).  In that case the `session_shm()` pool will indeed</span></div>
<div class="line"><a id="l00124" name="l00124"></a><span class="lineno">  124</span><span class="comment">   * leak, in that this dtor won&#39;t execute, so the `remove_persistent()` will not occur in that fashion.</span></div>
<div class="line"><a id="l00125" name="l00125"></a><span class="lineno">  125</span><span class="comment">   * The shm::classic::Session_server has a contingency for this, which we don&#39;t describe here, wherein it has</span></div>
<div class="line"><a id="l00126" name="l00126"></a><span class="lineno">  126</span><span class="comment">   * *cleanup points* at which it cleans up anything thus leaked during previous invocations of the same</span></div>
<div class="line"><a id="l00127" name="l00127"></a><span class="lineno">  127</span><span class="comment">   * Server_app.</span></div>
<div class="line"><a id="l00128" name="l00128"></a><span class="lineno">  128</span><span class="comment">   *</span></div>
<div class="line"><a id="l00129" name="l00129"></a><span class="lineno">  129</span><span class="comment">   * ### What about the per-app pool? ###</span></div>
<div class="line"><a id="l00130" name="l00130"></a><span class="lineno">  130</span><span class="comment">   * The above talks only of the Session_impl::session_shm() pool; what about</span></div>
<div class="line"><a id="l00131" name="l00131"></a><span class="lineno">  131</span><span class="comment">   * Session_impl::app_shm()?  Shouldn&#39;t we clean it up here?  Answer: No.  By definition that pool</span></div>
<div class="line"><a id="l00132" name="l00132"></a><span class="lineno">  132</span><span class="comment">   * is cross-session; more sessions may be opened within for the same Server_app and will expect the pool</span></div>
<div class="line"><a id="l00133" name="l00133"></a><span class="lineno">  133</span><span class="comment">   * to persist.  Hence any graceful cleanup is under the purview of Session_server dtor (in loosely</span></div>
<div class="line"><a id="l00134" name="l00134"></a><span class="lineno">  134</span><span class="comment">   * similar fashion to the present dtor).</span></div>
<div class="line"><a id="l00135" name="l00135"></a><span class="lineno">  135</span><span class="comment">   */</span></div>
<div class="line"><a id="l00136" name="l00136"></a><span class="lineno"><a class="line" href="classipc_1_1session_1_1shm_1_1classic_1_1Server__session__impl.html#a3c210b4b0acb3edebfa3fd735f02a854">  136</a></span>  <a class="code hl_function" href="classipc_1_1session_1_1shm_1_1classic_1_1Server__session__impl.html#a3c210b4b0acb3edebfa3fd735f02a854">~Server_session_impl</a>();</div>
<div class="line"><a id="l00137" name="l00137"></a><span class="lineno">  137</span> </div>
<div class="line"><a id="l00138" name="l00138"></a><span class="lineno">  138</span>  <span class="comment">// Methods.</span></div>
<div class="line"><a id="l00139" name="l00139"></a><span class="lineno">  139</span><span class="comment"></span> </div>
<div class="line"><a id="l00140" name="l00140"></a><span class="lineno">  140</span><span class="comment">  /**</span></div>
<div class="line"><a id="l00141" name="l00141"></a><span class="lineno">  141</span><span class="comment">   * For use by internal user Session_server: See Server_session_mv counterpart.  While the formal contract</span></div>
<div class="line"><a id="l00142" name="l00142"></a><span class="lineno">  142</span><span class="comment">   * here is unchanged from vanilla Server_session_impl, internally: this one, before `on_done_func()` can be</span></div>
<div class="line"><a id="l00143" name="l00143"></a><span class="lineno">  143</span><span class="comment">   * invoked successfully -- and moreover before the opposing shm::classic::Client_session is informed the</span></div>
<div class="line"><a id="l00144" name="l00144"></a><span class="lineno">  144</span><span class="comment">   * session may proceed -- also creates a per-session-scope SHM arena which is accessible in PEER state via</span></div>
<div class="line"><a id="l00145" name="l00145"></a><span class="lineno">  145</span><span class="comment">   * session_shm().  The opposing session peer hence also makes it available via</span></div>
<div class="line"><a id="l00146" name="l00146"></a><span class="lineno">  146</span><span class="comment">   * `shm::classic::Client_session::session_shm()`.</span></div>
<div class="line"><a id="l00147" name="l00147"></a><span class="lineno">  147</span><span class="comment">   *</span></div>
<div class="line"><a id="l00148" name="l00148"></a><span class="lineno">  148</span><span class="comment">   * @param srv</span></div>
<div class="line"><a id="l00149" name="l00149"></a><span class="lineno">  149</span><span class="comment">   *        See Server_session_mv counterpart.</span></div>
<div class="line"><a id="l00150" name="l00150"></a><span class="lineno">  150</span><span class="comment">   * @param init_channels_by_srv_req</span></div>
<div class="line"><a id="l00151" name="l00151"></a><span class="lineno">  151</span><span class="comment">   *        See Server_session_mv counterpart.</span></div>
<div class="line"><a id="l00152" name="l00152"></a><span class="lineno">  152</span><span class="comment">   * @param mdt_from_cli_or_null</span></div>
<div class="line"><a id="l00153" name="l00153"></a><span class="lineno">  153</span><span class="comment">   *        See Server_session_mv counterpart.</span></div>
<div class="line"><a id="l00154" name="l00154"></a><span class="lineno">  154</span><span class="comment">   * @param init_channels_by_cli_req</span></div>
<div class="line"><a id="l00155" name="l00155"></a><span class="lineno">  155</span><span class="comment">   *        See Server_session_mv counterpart.</span></div>
<div class="line"><a id="l00156" name="l00156"></a><span class="lineno">  156</span><span class="comment">   * @param cli_app_lookup_func</span></div>
<div class="line"><a id="l00157" name="l00157"></a><span class="lineno">  157</span><span class="comment">   *        See Server_session_mv counterpart.</span></div>
<div class="line"><a id="l00158" name="l00158"></a><span class="lineno">  158</span><span class="comment">   * @param cli_namespace_func</span></div>
<div class="line"><a id="l00159" name="l00159"></a><span class="lineno">  159</span><span class="comment">   *        See Server_session_mv counterpart.</span></div>
<div class="line"><a id="l00160" name="l00160"></a><span class="lineno">  160</span><span class="comment">   * @param pre_rsp_setup_func</span></div>
<div class="line"><a id="l00161" name="l00161"></a><span class="lineno">  161</span><span class="comment">   *        See Server_session_mv counterpart.</span></div>
<div class="line"><a id="l00162" name="l00162"></a><span class="lineno">  162</span><span class="comment">   * @param n_init_channels_by_srv_req_func</span></div>
<div class="line"><a id="l00163" name="l00163"></a><span class="lineno">  163</span><span class="comment">   *        See Server_session_mv counterpart.</span></div>
<div class="line"><a id="l00164" name="l00164"></a><span class="lineno">  164</span><span class="comment">   * @param mdt_load_func</span></div>
<div class="line"><a id="l00165" name="l00165"></a><span class="lineno">  165</span><span class="comment">   *        See Server_session_mv counterpart.</span></div>
<div class="line"><a id="l00166" name="l00166"></a><span class="lineno">  166</span><span class="comment">   * @param on_done_func</span></div>
<div class="line"><a id="l00167" name="l00167"></a><span class="lineno">  167</span><span class="comment">   *        See Server_session_mv counterpart.</span></div>
<div class="line"><a id="l00168" name="l00168"></a><span class="lineno">  168</span><span class="comment">   */</span></div>
<div class="line"><a id="l00169" name="l00169"></a><span class="lineno">  169</span>  <span class="keyword">template</span>&lt;<span class="keyword">typename</span> Session_server_impl_t,</div>
<div class="line"><a id="l00170" name="l00170"></a><span class="lineno">  170</span>           <span class="keyword">typename</span> Task_err, <span class="keyword">typename</span> Cli_app_lookup_func, <span class="keyword">typename</span> Cli_namespace_func, <span class="keyword">typename</span> Pre_rsp_setup_func,</div>
<div class="line"><a id="l00171" name="l00171"></a><span class="lineno">  171</span>           <span class="keyword">typename</span> N_init_channels_by_srv_req_func, <span class="keyword">typename</span> Mdt_load_func&gt;</div>
<div class="line"><a id="l00172" name="l00172"></a><span class="lineno">  172</span>  <span class="keywordtype">void</span> <a class="code hl_function" href="classipc_1_1session_1_1shm_1_1classic_1_1Server__session__impl.html#a9c78b2c35b853e1702a06ec451545945">async_accept_log_in</a>(Session_server_impl_t* srv,</div>
<div class="line"><a id="l00173" name="l00173"></a><span class="lineno">  173</span>                           <span class="keyword">typename</span> <a class="code hl_typedef" href="classipc_1_1session_1_1Session__base.html#a638232ef74a0eb80aeb4f027ee06f9bf">Base::Base::Channels</a>* init_channels_by_srv_req,</div>
<div class="line"><a id="l00174" name="l00174"></a><span class="lineno">  174</span>                           <span class="keyword">typename</span> <a class="code hl_typedef" href="classipc_1_1session_1_1Session__base.html#ace4dab42adec6354cc66081dd218ac71">Base::Base::Mdt_reader_ptr</a>* mdt_from_cli_or_null,</div>
<div class="line"><a id="l00175" name="l00175"></a><span class="lineno">  175</span>                           <span class="keyword">typename</span> <a class="code hl_typedef" href="classipc_1_1session_1_1Session__base.html#a638232ef74a0eb80aeb4f027ee06f9bf">Base::Base::Channels</a>* init_channels_by_cli_req,</div>
<div class="line"><a id="l00176" name="l00176"></a><span class="lineno">  176</span>                           Cli_app_lookup_func&amp;&amp; cli_app_lookup_func, Cli_namespace_func&amp;&amp; cli_namespace_func,</div>
<div class="line"><a id="l00177" name="l00177"></a><span class="lineno">  177</span>                           Pre_rsp_setup_func&amp;&amp; pre_rsp_setup_func,</div>
<div class="line"><a id="l00178" name="l00178"></a><span class="lineno">  178</span>                           N_init_channels_by_srv_req_func&amp;&amp; n_init_channels_by_srv_req_func,</div>
<div class="line"><a id="l00179" name="l00179"></a><span class="lineno">  179</span>                           Mdt_load_func&amp;&amp; mdt_load_func,</div>
<div class="line"><a id="l00180" name="l00180"></a><span class="lineno">  180</span>                           Task_err&amp;&amp; on_done_func);</div>
<div class="line"><a id="l00181" name="l00181"></a><span class="lineno">  181</span> </div>
<div class="line"><a id="l00182" name="l00182"></a><span class="lineno">  182</span>  <span class="comment">// The LOG_*() macros don&#39;t see Log_context::get_log*() from base otherwise....</span></div>
<div class="line"><a id="l00183" name="l00183"></a><span class="lineno">  183</span>  <span class="keyword">using </span>flow::log::Log_context::get_logger;</div>
<div class="line"><a id="l00184" name="l00184"></a><span class="lineno">  184</span>  <span class="keyword">using </span>flow::log::Log_context::get_log_component;</div>
<div class="line"><a id="l00185" name="l00185"></a><span class="lineno">  185</span>}; <span class="comment">// class Server_session_impl</span></div>
<div class="line"><a id="l00186" name="l00186"></a><span class="lineno">  186</span> </div>
<div class="line"><a id="l00187" name="l00187"></a><span class="lineno">  187</span><span class="comment">// Free functions: in *_fwd.hpp.</span></div>
<div class="line"><a id="l00188" name="l00188"></a><span class="lineno">  188</span> </div>
<div class="line"><a id="l00189" name="l00189"></a><span class="lineno">  189</span><span class="comment">// Template implementations.</span></div>
<div class="line"><a id="l00190" name="l00190"></a><span class="lineno">  190</span><span class="comment"></span> </div>
<div class="line"><a id="l00191" name="l00191"></a><span class="lineno">  191</span><span class="comment">/// Internally used macro; public API users should disregard (same deal as in struc/channel.hpp).</span></div>
<div class="line"><a id="l00192" name="l00192"></a><span class="lineno"><a class="line" href="ipc__shm_2src_2ipc_2session_2detail_2shm_2classic_2server__session__impl_8hpp.html#a9489a474616f58c0d13630cfaa0c7741">  192</a></span><span class="comment"></span><span class="preprocessor">#define TEMPLATE_CLSC_SRV_SESSION_IMPL \</span></div>
<div class="line"><a id="l00193" name="l00193"></a><span class="lineno">  193</span><span class="preprocessor">  template&lt;schema::MqType S_MQ_TYPE_OR_NONE, bool S_TRANSMIT_NATIVE_HANDLES, typename Mdt_payload&gt;</span><span class="comment"></span></div>
<div class="line"><a id="l00194" name="l00194"></a><span class="lineno">  194</span><span class="comment">/// Internally used macro; public API users should disregard (same deal as in struc/channel.hpp).</span></div>
<div class="line"><a id="l00195" name="l00195"></a><span class="lineno"><a class="line" href="ipc__shm_2src_2ipc_2session_2detail_2shm_2classic_2server__session__impl_8hpp.html#af6058221697a416156e8cb50d4428820">  195</a></span><span class="comment"></span><span class="preprocessor">#define CLASS_CLSC_SRV_SESSION_IMPL \</span></div>
<div class="line"><a id="l00196" name="l00196"></a><span class="lineno">  196</span><span class="preprocessor">  Server_session_impl&lt;S_MQ_TYPE_OR_NONE, S_TRANSMIT_NATIVE_HANDLES, Mdt_payload&gt;</span></div>
<div class="line"><a id="l00197" name="l00197"></a><span class="lineno">  197</span> </div>
<div class="line"><a id="l00198" name="l00198"></a><span class="lineno">  198</span><span class="comment">// Only declared so it could be documented.  Please see async_accept_log_in(); it ensures the documented behavior.</span></div>
<div class="line"><a id="l00199" name="l00199"></a><span class="lineno">  199</span><a class="code hl_define" href="ipc__shm_2src_2ipc_2session_2detail_2shm_2classic_2server__session__impl_8hpp.html#a9489a474616f58c0d13630cfaa0c7741">TEMPLATE_CLSC_SRV_SESSION_IMPL</a></div>
<div class="line"><a id="l00200" name="l00200"></a><span class="lineno">  200</span>CLASS_CLSC_SRV_SESSION_IMPL::~Server_session_impl() = <span class="keywordflow">default</span>;</div>
<div class="line"><a id="l00201" name="l00201"></a><span class="lineno">  201</span> </div>
<div class="line"><a id="l00202" name="l00202"></a><span class="lineno">  202</span><a class="code hl_define" href="ipc__shm_2src_2ipc_2session_2detail_2shm_2classic_2server__session__impl_8hpp.html#a9489a474616f58c0d13630cfaa0c7741">TEMPLATE_CLSC_SRV_SESSION_IMPL</a></div>
<div class="line"><a id="l00203" name="l00203"></a><span class="lineno">  203</span><span class="keyword">template</span>&lt;<span class="keyword">typename</span> Session_server_impl_t,</div>
<div class="line"><a id="l00204" name="l00204"></a><span class="lineno">  204</span>         <span class="keyword">typename</span> Task_err, <span class="keyword">typename</span> Cli_app_lookup_func, <span class="keyword">typename</span> Cli_namespace_func, <span class="keyword">typename</span> Pre_rsp_setup_func,</div>
<div class="line"><a id="l00205" name="l00205"></a><span class="lineno">  205</span>         <span class="keyword">typename</span> N_init_channels_by_srv_req_func, <span class="keyword">typename</span> Mdt_load_func&gt;</div>
<div class="line"><a id="l00206" name="l00206"></a><span class="lineno"><a class="line" href="classipc_1_1session_1_1shm_1_1classic_1_1Server__session__impl.html#a9c78b2c35b853e1702a06ec451545945">  206</a></span><span class="keywordtype">void</span> CLASS_CLSC_SRV_SESSION_IMPL::async_accept_log_in</div>
<div class="line"><a id="l00207" name="l00207"></a><span class="lineno">  207</span>       (Session_server_impl_t* srv,</div>
<div class="line"><a id="l00208" name="l00208"></a><span class="lineno">  208</span>        <span class="keyword">typename</span> <a class="code hl_typedef" href="classipc_1_1session_1_1Session__base.html#a638232ef74a0eb80aeb4f027ee06f9bf">Base::Base::Channels</a>* init_channels_by_srv_req,</div>
<div class="line"><a id="l00209" name="l00209"></a><span class="lineno">  209</span>        <span class="keyword">typename</span> <a class="code hl_typedef" href="classipc_1_1session_1_1Session__base.html#ace4dab42adec6354cc66081dd218ac71">Base::Base::Mdt_reader_ptr</a>* mdt_from_cli_or_null,</div>
<div class="line"><a id="l00210" name="l00210"></a><span class="lineno">  210</span>        <span class="keyword">typename</span> <a class="code hl_typedef" href="classipc_1_1session_1_1Session__base.html#a638232ef74a0eb80aeb4f027ee06f9bf">Base::Base::Channels</a>* init_channels_by_cli_req,</div>
<div class="line"><a id="l00211" name="l00211"></a><span class="lineno">  211</span>        Cli_app_lookup_func&amp;&amp; cli_app_lookup_func,</div>
<div class="line"><a id="l00212" name="l00212"></a><span class="lineno">  212</span>        Cli_namespace_func&amp;&amp; cli_namespace_func, Pre_rsp_setup_func&amp;&amp; pre_rsp_setup_func,</div>
<div class="line"><a id="l00213" name="l00213"></a><span class="lineno">  213</span>        N_init_channels_by_srv_req_func&amp;&amp; n_init_channels_by_srv_req_func, Mdt_load_func&amp;&amp; mdt_load_func,</div>
<div class="line"><a id="l00214" name="l00214"></a><span class="lineno">  214</span>        Task_err&amp;&amp; on_done_func)</div>
<div class="line"><a id="l00215" name="l00215"></a><span class="lineno">  215</span>{</div>
<div class="line"><a id="l00216" name="l00216"></a><span class="lineno">  216</span>  <span class="keyword">using </span>boost::movelib::make_unique;</div>
<div class="line"><a id="l00217" name="l00217"></a><span class="lineno">  217</span> </div>
<div class="line"><a id="l00218" name="l00218"></a><span class="lineno">  218</span>  <span class="comment">// The extra stuff to do on top of the base vanilla Server_session_impl.</span></div>
<div class="line"><a id="l00219" name="l00219"></a><span class="lineno">  219</span>  <span class="keyword">auto</span> real_pre_rsp_setup_func</div>
<div class="line"><a id="l00220" name="l00220"></a><span class="lineno">  220</span>    = [<span class="keyword">this</span>,</div>
<div class="line"><a id="l00221" name="l00221"></a><span class="lineno">  221</span>       <span class="comment">// Get the Session_server&lt;&gt; such that its core comprises the arg `srv`.</span></div>
<div class="line"><a id="l00222" name="l00222"></a><span class="lineno">  222</span>       srv = srv-&gt;this_session_srv(),</div>
<div class="line"><a id="l00223" name="l00223"></a><span class="lineno">  223</span>       pre_rsp_setup_func = std::move(pre_rsp_setup_func)]</div>
<div class="line"><a id="l00224" name="l00224"></a><span class="lineno">  224</span>        () -&gt; <a class="code hl_typedef" href="namespaceipc.html#aa3192e586cc45d3e7c22463bf2760f89">Error_code</a></div>
<div class="line"><a id="l00225" name="l00225"></a><span class="lineno">  225</span>  {</div>
<div class="line"><a id="l00226" name="l00226"></a><span class="lineno">  226</span>    <span class="comment">// We are in thread W.</span></div>
<div class="line"><a id="l00227" name="l00227"></a><span class="lineno">  227</span> </div>
<div class="line"><a id="l00228" name="l00228"></a><span class="lineno">  228</span>    <span class="keyword">auto</span> err_code = pre_rsp_setup_func();</div>
<div class="line"><a id="l00229" name="l00229"></a><span class="lineno">  229</span>    <span class="keywordflow">if</span> (err_code)</div>
<div class="line"><a id="l00230" name="l00230"></a><span class="lineno">  230</span>    {</div>
<div class="line"><a id="l00231" name="l00231"></a><span class="lineno">  231</span>      <span class="comment">// Any Session_server-given setup failed =&gt; no point in doing our SHM-classic per-session setup.</span></div>
<div class="line"><a id="l00232" name="l00232"></a><span class="lineno">  232</span>      <span class="keywordflow">return</span> err_code;</div>
<div class="line"><a id="l00233" name="l00233"></a><span class="lineno">  233</span>    }</div>
<div class="line"><a id="l00234" name="l00234"></a><span class="lineno">  234</span>    <span class="comment">// else</span></div>
<div class="line"><a id="l00235" name="l00235"></a><span class="lineno">  235</span> </div>
<div class="line"><a id="l00236" name="l00236"></a><span class="lineno">  236</span>    <span class="comment">/* Do our extra stuff on top of the base vanilla Server_session_impl.  Namely: app_shm() and session_shm().</span></div>
<div class="line"><a id="l00237" name="l00237"></a><span class="lineno">  237</span><span class="comment">     *</span></div>
<div class="line"><a id="l00238" name="l00238"></a><span class="lineno">  238</span><span class="comment">     * app_shm first: please see our class doc header; then come back here.  To summarize:</span></div>
<div class="line"><a id="l00239" name="l00239"></a><span class="lineno">  239</span><span class="comment">     *   - pre_rsp_setup_func() had to have created what we want app_shm() to return.</span></div>
<div class="line"><a id="l00240" name="l00240"></a><span class="lineno">  240</span><span class="comment">     *     - If it already existed by then (Client_app seen already), even better.</span></div>
<div class="line"><a id="l00241" name="l00241"></a><span class="lineno">  241</span><span class="comment">     *     - If that creation failed, then pre_rsp_setup_func() just failed, so we are not here.</span></div>
<div class="line"><a id="l00242" name="l00242"></a><span class="lineno">  242</span><span class="comment">     *   - Parent session server&#39;s app_shm(&lt;the Client_app&gt;) = what we want. */</span></div>
<div class="line"><a id="l00243" name="l00243"></a><span class="lineno">  243</span>    <span class="keyword">auto</span> app_shm = srv-&gt;app_shm(*(Base::Base::Base::cli_app_ptr()));</div>
<div class="line"><a id="l00244" name="l00244"></a><span class="lineno">  244</span>    assert(app_shm &amp;&amp; <span class="stringliteral">&quot;How can it be null, if pre_rsp_setup_func() returned success?  Contract broken internally?&quot;</span>);</div>
<div class="line"><a id="l00245" name="l00245"></a><span class="lineno">  245</span> </div>
<div class="line"><a id="l00246" name="l00246"></a><span class="lineno">  246</span>    <span class="comment">/* Now session_shm().  This is different (see our doc header again): we actually must create it ourselves, as it&#39;s</span></div>
<div class="line"><a id="l00247" name="l00247"></a><span class="lineno">  247</span><span class="comment">     * a per-session thing we&#39;re making available (both to us and the opposing Client_session once it receives</span></div>
<div class="line"><a id="l00248" name="l00248"></a><span class="lineno">  248</span><span class="comment">     * word that log-in succeeded, from us, right after this).</span></div>
<div class="line"><a id="l00249" name="l00249"></a><span class="lineno">  249</span><span class="comment">     *</span></div>
<div class="line"><a id="l00250" name="l00250"></a><span class="lineno">  250</span><span class="comment">     * The name is similar -- but in the per-session scope, so we supply cli_namespace() instead of the default</span></div>
<div class="line"><a id="l00251" name="l00251"></a><span class="lineno">  251</span><span class="comment">     * (SENTINEL).  The same thing regarding 1ST_OR_ONLY applies here too. */</span></div>
<div class="line"><a id="l00252" name="l00252"></a><span class="lineno">  252</span>    <span class="keyword">const</span> <span class="keyword">auto</span>&amp; srv_app = Base::Base::Base::m_srv_app_ref;</div>
<div class="line"><a id="l00253" name="l00253"></a><span class="lineno">  253</span>    <span class="keyword">auto</span> shm_pool_name = <a class="code hl_function" href="namespaceipc_1_1session.html#a365d2d63f77b738e67e206af6b702634">build_conventional_shared_name</a>(<a class="code hl_variable" href="classipc_1_1util_1_1Shared__name.html#a4c294e23753eb706b4c297d99d24cd48">Shared_name::S_RESOURCE_TYPE_ID_SHM</a>,</div>
<div class="line"><a id="l00254" name="l00254"></a><span class="lineno">  254</span>                                                        <a class="code hl_function" href="classipc_1_1util_1_1Shared__name.html#a48f20b7b54490aa10dc64081d34c55b2">Shared_name::ct</a>(srv_app.m_name),</div>
<div class="line"><a id="l00255" name="l00255"></a><span class="lineno">  255</span>                                                        Base::Base::Base::srv_namespace(),</div>
<div class="line"><a id="l00256" name="l00256"></a><span class="lineno">  256</span>                                                        <a class="code hl_function" href="classipc_1_1util_1_1Shared__name.html#a48f20b7b54490aa10dc64081d34c55b2">Shared_name::ct</a>(Base::Base::Base::cli_app_ptr()-&gt;m_name),</div>
<div class="line"><a id="l00257" name="l00257"></a><span class="lineno">  257</span>                                                        Base::Base::Base::cli_namespace())</div>
<div class="line"><a id="l00258" name="l00258"></a><span class="lineno">  258</span>                         / <a class="code hl_variable" href="namespaceipc_1_1session_1_1shm_1_1classic.html#a302c6f293732270b584f94193ffac1b8">SHM_SUBTYPE_PREFIX</a></div>
<div class="line"><a id="l00259" name="l00259"></a><span class="lineno">  259</span>                         / <a class="code hl_variable" href="classipc_1_1util_1_1Shared__name.html#aaa78ddb3efa5abe4fa80058dedbef68c">Shared_name::S_1ST_OR_ONLY</a>;</div>
<div class="line"><a id="l00260" name="l00260"></a><span class="lineno">  260</span> </div>
<div class="line"><a id="l00261" name="l00261"></a><span class="lineno">  261</span>    <span class="keyword">auto</span> session_shm = make_unique&lt;typename Base::Arena&gt;(get_logger(), shm_pool_name, <a class="code hl_variable" href="namespaceipc_1_1util.html#ad1ca1cab79a35e1eb1c47037a0973cd8">util::CREATE_ONLY</a>,</div>
<div class="line"><a id="l00262" name="l00262"></a><span class="lineno">  262</span>                                                         <span class="keywordtype">size_t</span>(1024 * 1024) * srv-&gt;pool_size_limit_mi(),</div>
<div class="line"><a id="l00263" name="l00263"></a><span class="lineno">  263</span>                                                         <a class="code hl_function" href="namespaceipc_1_1util.html#abda2ce5bcdbc26ca63d667b87818439c">util::shared_resource_permissions</a></div>
<div class="line"><a id="l00264" name="l00264"></a><span class="lineno">  264</span>                                                           (srv_app.m_permissions_level_for_client_apps),</div>
<div class="line"><a id="l00265" name="l00265"></a><span class="lineno">  265</span>                                                         &amp;err_code);</div>
<div class="line"><a id="l00266" name="l00266"></a><span class="lineno">  266</span>    <span class="keywordflow">if</span> (err_code)</div>
<div class="line"><a id="l00267" name="l00267"></a><span class="lineno">  267</span>    {</div>
<div class="line"><a id="l00268" name="l00268"></a><span class="lineno">  268</span>      <span class="comment">/* It logged.  GTFO.</span></div>
<div class="line"><a id="l00269" name="l00269"></a><span class="lineno">  269</span><span class="comment">       * Note: If app_shm assignment above did in fact create the pool, perhaps we should delete it now</span></div>
<div class="line"><a id="l00270" name="l00270"></a><span class="lineno">  270</span><span class="comment">       * via Pool_arena::remove_persistent(&lt;name&gt;).  However:</span></div>
<div class="line"><a id="l00271" name="l00271"></a><span class="lineno">  271</span><span class="comment">       *   - How to even find out that we did, versus it having already existed?</span></div>
<div class="line"><a id="l00272" name="l00272"></a><span class="lineno">  272</span><span class="comment">       *   - Even if we could, is that even the right thing?  The existence of a nearly-empty cross-session</span></div>
<div class="line"><a id="l00273" name="l00273"></a><span class="lineno">  273</span><span class="comment">       *     arena is not such a crime; and technically a given session failing to open is *not* considered</span></div>
<div class="line"><a id="l00274" name="l00274"></a><span class="lineno">  274</span><span class="comment">       *     the doom of the daddy Session_server or future session-open attempts.  So if it did get created,</span></div>
<div class="line"><a id="l00275" name="l00275"></a><span class="lineno">  275</span><span class="comment">       *     at least formally speaking it&#39;s not necessarily futile and could be used.  And if the Session_server</span></div>
<div class="line"><a id="l00276" name="l00276"></a><span class="lineno">  276</span><span class="comment">       *     does get totally hosed, we have sophisticated mechanisms for cleaning up old `Session_server`s&#39; resources.</span></div>
<div class="line"><a id="l00277" name="l00277"></a><span class="lineno">  277</span><span class="comment">       *</span></div>
<div class="line"><a id="l00278" name="l00278"></a><span class="lineno">  278</span><span class="comment">       * So yeah, don&#39;t touch it. */</span></div>
<div class="line"><a id="l00279" name="l00279"></a><span class="lineno">  279</span>      <span class="keywordflow">return</span> err_code;</div>
<div class="line"><a id="l00280" name="l00280"></a><span class="lineno">  280</span>    }</div>
<div class="line"><a id="l00281" name="l00281"></a><span class="lineno">  281</span>    <span class="comment">// else</span></div>
<div class="line"><a id="l00282" name="l00282"></a><span class="lineno">  282</span> </div>
<div class="line"><a id="l00283" name="l00283"></a><span class="lineno">  283</span>    Base::init_shm_arenas(std::move(session_shm), app_shm);</div>
<div class="line"><a id="l00284" name="l00284"></a><span class="lineno">  284</span> </div>
<div class="line"><a id="l00285" name="l00285"></a><span class="lineno">  285</span>    <span class="comment">/* Cool!  Let&#39;s return (and continue the log-in async op!).  ...Not so fast.  Almost.</span></div>
<div class="line"><a id="l00286" name="l00286"></a><span class="lineno">  286</span><span class="comment">     * Please now see the doc header for our dtor, where we promise -- on dtor invocation -- to remove the</span></div>
<div class="line"><a id="l00287" name="l00287"></a><span class="lineno">  287</span><span class="comment">     * session_shm() pool.  It explains why we do that, and what actual effect it has.  The below is *how*</span></div>
<div class="line"><a id="l00288" name="l00288"></a><span class="lineno">  288</span><span class="comment">     * we accomplish it: We have just made session_shm() non-null; and therefore (and this is the only way it</span></div>
<div class="line"><a id="l00289" name="l00289"></a><span class="lineno">  289</span><span class="comment">     * would become non-null and need cleaning up) we now ensure that *in* the dtor, the pool removal shall execute.</span></div>
<div class="line"><a id="l00290" name="l00290"></a><span class="lineno">  290</span><span class="comment">     *</span></div>
<div class="line"><a id="l00291" name="l00291"></a><span class="lineno">  291</span><span class="comment">     * It&#39;s tempting to Just Do It in the dtor, but there are caveats.  Vaguely, all we want to do is something like,</span></div>
<div class="line"><a id="l00292" name="l00292"></a><span class="lineno">  292</span><span class="comment">     * right in the dtor:</span></div>
<div class="line"><a id="l00293" name="l00293"></a><span class="lineno">  293</span><span class="comment">     *   if (session_shm()) { Arena::remove_persistent(N); } // Where N is same as computed into shm_pool_name above.</span></div>
<div class="line"><a id="l00294" name="l00294"></a><span class="lineno">  294</span><span class="comment">     * I.e., do nothing if async_accept_log_in() never actually did set up session_shm(); otherwise do it.</span></div>
<div class="line"><a id="l00295" name="l00295"></a><span class="lineno">  295</span><span class="comment">     * This would work 99.999% of the time just fine... except for the annoying possibility that the user</span></div>
<div class="line"><a id="l00296" name="l00296"></a><span class="lineno">  296</span><span class="comment">     * (some Server_session-type-guy really, so internal code) destroys *this while async_accept_log_in() is</span></div>
<div class="line"><a id="l00297" name="l00297"></a><span class="lineno">  297</span><span class="comment">     * outstanding still.  (I don&#39;t bother to mentally track down what the actual user would have to do to make</span></div>
<div class="line"><a id="l00298" name="l00298"></a><span class="lineno">  298</span><span class="comment">     * it happen... even if it&#39;s not actually possible -- at this stage I (ygoldfel) don&#39;t even remember.  We need</span></div>
<div class="line"><a id="l00299" name="l00299"></a><span class="lineno">  299</span><span class="comment">     * to code defensively: we have an async_() method, and the dtor may be called while it&#39;s still outstanding...</span></div>
<div class="line"><a id="l00300" name="l00300"></a><span class="lineno">  300</span><span class="comment">     * period.  Let us not write brittle code.)</span></div>
<div class="line"><a id="l00301" name="l00301"></a><span class="lineno">  301</span><span class="comment">     *</span></div>
<div class="line"><a id="l00302" name="l00302"></a><span class="lineno">  302</span><span class="comment">     * In my mind this leaves two possible approaches.</span></div>
<div class="line"><a id="l00303" name="l00303"></a><span class="lineno">  303</span><span class="comment">     *</span></div>
<div class="line"><a id="l00304" name="l00304"></a><span class="lineno">  304</span><span class="comment">     * One is to operate in thread W but from the dtor; we could (in the dtor) post basically the</span></div>
<div class="line"><a id="l00305" name="l00305"></a><span class="lineno">  305</span><span class="comment">     * above code and wait until it executes concurrently; then return (and let the super-class dtor chain run).</span></div>
<div class="line"><a id="l00306" name="l00306"></a><span class="lineno">  306</span><span class="comment">     * However this is entropy-laden and seems to involve a race against the potentially ongoing async_accept_log_in().</span></div>
<div class="line"><a id="l00307" name="l00307"></a><span class="lineno">  307</span><span class="comment">     * Like, suppose we do that -- and session_shm() is not yet set-up -- so we no-op; then while the super-class</span></div>
<div class="line"><a id="l00308" name="l00308"></a><span class="lineno">  308</span><span class="comment">     * dtors are running (including the highly significant Server_session_impl dtor) the log-in happens to advance</span></div>
<div class="line"><a id="l00309" name="l00309"></a><span class="lineno">  309</span><span class="comment">     * a bit and sets up session_shm(), before that dtor has a chance to stop/join thread W.  Now we&#39;ve leaked</span></div>
<div class="line"><a id="l00310" name="l00310"></a><span class="lineno">  310</span><span class="comment">     * the RAM.  (Granted, the anti-crash contingency in Session_server should catch it when the next</span></div>
<div class="line"><a id="l00311" name="l00311"></a><span class="lineno">  311</span><span class="comment">     * instance -- if any -- of this Server_app starts up.  Relying on that outside a crash scenario is a misuse</span></div>
<div class="line"><a id="l00312" name="l00312"></a><span class="lineno">  312</span><span class="comment">     * of that contingency logic; there is nothing un-graceful about our dtor being invoked before log-in completes.)</span></div>
<div class="line"><a id="l00313" name="l00313"></a><span class="lineno">  313</span><span class="comment">     *</span></div>
<div class="line"><a id="l00314" name="l00314"></a><span class="lineno">  314</span><span class="comment">     * The other approach is more orderly: We know the dtor chain is being invoked, so when ~Server_session_impl()</span></div>
<div class="line"><a id="l00315" name="l00315"></a><span class="lineno">  315</span><span class="comment">     * does execute (very soon), it will indeed stop thread W -- in whatever state it happens to be at the time.</span></div>
<div class="line"><a id="l00316" name="l00316"></a><span class="lineno">  316</span><span class="comment">     * At *that* stage there is no more race involved: there&#39;s just what that super-class dtor executes (in caller</span></div>
<div class="line"><a id="l00317" name="l00317"></a><span class="lineno">  317</span><span class="comment">     * thread U) after stopping thread W.  Now the state is straightforward: Either thread W did create session_shm()</span></div>
<div class="line"><a id="l00318" name="l00318"></a><span class="lineno">  318</span><span class="comment">     * pool -- then it should be removed -- or it did not (then there is nothing to remove).</span></div>
<div class="line"><a id="l00319" name="l00319"></a><span class="lineno">  319</span><span class="comment">     *</span></div>
<div class="line"><a id="l00320" name="l00320"></a><span class="lineno">  320</span><span class="comment">     * So that is what we do.  Server_session_impl supplies a `protected` API for any custom de-init code.  We</span></div>
<div class="line"><a id="l00321" name="l00321"></a><span class="lineno">  321</span><span class="comment">     * simply use that; and we only do that right here, the one place we make session_shm() pool actually exist. */</span></div>
<div class="line"><a id="l00322" name="l00322"></a><span class="lineno">  322</span>    Base::Base::sub_class_set_deinit_func([<span class="keyword">this</span>,</div>
<div class="line"><a id="l00323" name="l00323"></a><span class="lineno">  323</span>                                           <span class="comment">/* ^-- Careful: We only use this-&gt;get_logger() which is explicitly okay.</span></div>
<div class="line"><a id="l00324" name="l00324"></a><span class="lineno">  324</span><span class="comment">                                            * *this is destroyed w/r/t Server_session_impl by the</span></div>
<div class="line"><a id="l00325" name="l00325"></a><span class="lineno">  325</span><span class="comment">                                            * time this lambda is executed; so we do not use that. */</span></div>
<div class="line"><a id="l00326" name="l00326"></a><span class="lineno">  326</span>                                           shm_pool_name = std::move(shm_pool_name)]()</div>
<div class="line"><a id="l00327" name="l00327"></a><span class="lineno">  327</span>    {</div>
<div class="line"><a id="l00328" name="l00328"></a><span class="lineno">  328</span>      <span class="comment">// We are in thread U (in dtor chain).</span></div>
<div class="line"><a id="l00329" name="l00329"></a><span class="lineno">  329</span>      <a class="code hl_typedef" href="namespaceipc.html#aa3192e586cc45d3e7c22463bf2760f89">Error_code</a> sink; <span class="comment">// We do not care about any error.  This is our best effort; it&#39;ll WARN on (unlikely) error.</span></div>
<div class="line"><a id="l00330" name="l00330"></a><span class="lineno">  330</span>      Base::Arena::remove_persistent(this-&gt;get_logger(), shm_pool_name, &amp;sink);</div>
<div class="line"><a id="l00331" name="l00331"></a><span class="lineno">  331</span>    });</div>
<div class="line"><a id="l00332" name="l00332"></a><span class="lineno">  332</span> </div>
<div class="line"><a id="l00333" name="l00333"></a><span class="lineno">  333</span>    <span class="keywordflow">return</span> err_code; <span class="comment">// == Error_code().</span></div>
<div class="line"><a id="l00334" name="l00334"></a><span class="lineno">  334</span>  }; <span class="comment">// auto real_pre_rsp_setup_func =</span></div>
<div class="line"><a id="l00335" name="l00335"></a><span class="lineno">  335</span> </div>
<div class="line"><a id="l00336" name="l00336"></a><span class="lineno">  336</span>  <span class="comment">/* That&#39;s all we needed to do: ensure m_session_shm&#39;s underlying pool exists; m_session_shm points to it,</span></div>
<div class="line"><a id="l00337" name="l00337"></a><span class="lineno">  337</span><span class="comment">   * so session_shm() will work locally; and Base has recorded app_shm, so app_shm() will work locally.</span></div>
<div class="line"><a id="l00338" name="l00338"></a><span class="lineno">  338</span><span class="comment">   * If that failed, on_done_func(&lt;failure&gt;) will be called by contract -- satisying our contract.</span></div>
<div class="line"><a id="l00339" name="l00339"></a><span class="lineno">  339</span><span class="comment">   * If that succeeded, and so did everything else, we need not do anything else.</span></div>
<div class="line"><a id="l00340" name="l00340"></a><span class="lineno">  340</span><span class="comment">   * ...Damn, almost true.  If the above succeeded, but they still failed for some reason (as of this writing</span></div>
<div class="line"><a id="l00341" name="l00341"></a><span class="lineno">  341</span><span class="comment">   * it can only be the m_master_session_channel.send(&lt;log-in response&gt;)), then as promised in the</span></div>
<div class="line"><a id="l00342" name="l00342"></a><span class="lineno">  342</span><span class="comment">   * m_session_shm doc header we should aggressively clean up our SHM-pool handles.  So we just add a bit of</span></div>
<div class="line"><a id="l00343" name="l00343"></a><span class="lineno">  343</span><span class="comment">   * post-processing in that case. */</span></div>
<div class="line"><a id="l00344" name="l00344"></a><span class="lineno">  344</span> </div>
<div class="line"><a id="l00345" name="l00345"></a><span class="lineno">  345</span>  Base::Base::async_accept_log_in(srv,</div>
<div class="line"><a id="l00346" name="l00346"></a><span class="lineno">  346</span>                                  init_channels_by_srv_req, mdt_from_cli_or_null, init_channels_by_cli_req,</div>
<div class="line"><a id="l00347" name="l00347"></a><span class="lineno">  347</span>                                  std::move(cli_app_lookup_func),</div>
<div class="line"><a id="l00348" name="l00348"></a><span class="lineno">  348</span>                                  std::move(cli_namespace_func),</div>
<div class="line"><a id="l00349" name="l00349"></a><span class="lineno">  349</span>                                  std::move(real_pre_rsp_setup_func),</div>
<div class="line"><a id="l00350" name="l00350"></a><span class="lineno">  350</span>                                  std::move(n_init_channels_by_srv_req_func),</div>
<div class="line"><a id="l00351" name="l00351"></a><span class="lineno">  351</span>                                  std::move(mdt_load_func),</div>
<div class="line"><a id="l00352" name="l00352"></a><span class="lineno">  352</span> </div>
<div class="line"><a id="l00353" name="l00353"></a><span class="lineno">  353</span>                                  [<span class="keyword">this</span>, on_done_func = std::move(on_done_func)]</div>
<div class="line"><a id="l00354" name="l00354"></a><span class="lineno">  354</span>                                    (<span class="keyword">const</span> <a class="code hl_typedef" href="namespaceipc.html#aa3192e586cc45d3e7c22463bf2760f89">Error_code</a>&amp; err_code)</div>
<div class="line"><a id="l00355" name="l00355"></a><span class="lineno">  355</span>  {</div>
<div class="line"><a id="l00356" name="l00356"></a><span class="lineno">  356</span>    <span class="comment">// We are in thread W (from Base).</span></div>
<div class="line"><a id="l00357" name="l00357"></a><span class="lineno">  357</span> </div>
<div class="line"><a id="l00358" name="l00358"></a><span class="lineno">  358</span>    <span class="comment">// Be Aggressive in cleaning up early.  (Just no-op if `*this` is being hosed though.)</span></div>
<div class="line"><a id="l00359" name="l00359"></a><span class="lineno">  359</span>    <span class="keywordflow">if</span> (err_code &amp;&amp; (err_code != <a class="code hl_enumvalue" href="namespaceipc_1_1session_1_1error.html#a0708d4bec9ae853f4d7e3d7822fc8f2fafe29343445a7bf167cc186a44bd2c6ed">error::Code::S_OBJECT_SHUTDOWN_ABORTED_COMPLETION_HANDLER</a>))</div>
<div class="line"><a id="l00360" name="l00360"></a><span class="lineno">  360</span>    {</div>
<div class="line"><a id="l00361" name="l00361"></a><span class="lineno">  361</span>      Base::reset_shm_arenas();</div>
<div class="line"><a id="l00362" name="l00362"></a><span class="lineno">  362</span>    }</div>
<div class="line"><a id="l00363" name="l00363"></a><span class="lineno">  363</span> </div>
<div class="line"><a id="l00364" name="l00364"></a><span class="lineno">  364</span>    on_done_func(err_code);</div>
<div class="line"><a id="l00365" name="l00365"></a><span class="lineno">  365</span>  }); <span class="comment">// Base::Base::async_accept_log_in()</span></div>
<div class="line"><a id="l00366" name="l00366"></a><span class="lineno">  366</span>} <span class="comment">// Server_session_impl::async_accept_log_in()</span></div>
<div class="line"><a id="l00367" name="l00367"></a><span class="lineno">  367</span> </div>
<div class="line"><a id="l00368" name="l00368"></a><span class="lineno">  368</span><a class="code hl_define" href="ipc__shm_2src_2ipc_2session_2detail_2shm_2classic_2server__session__impl_8hpp.html#a9489a474616f58c0d13630cfaa0c7741">TEMPLATE_CLSC_SRV_SESSION_IMPL</a></div>
<div class="line"><a id="l00369" name="l00369"></a><span class="lineno"><a class="line" href="classipc_1_1session_1_1shm_1_1classic_1_1Server__session__impl.html#ab569367084e0292c7f5284c4dabe3a10">  369</a></span>std::ostream&amp; <a class="code hl_function" href="namespaceipc_1_1session_1_1shm_1_1classic.html#ae28750f5d14a8ec78ea4d5310e212482">operator&lt;&lt;</a>(std::ostream&amp; os, <span class="keyword">const</span> <a class="code hl_define" href="ipc__shm_2src_2ipc_2session_2detail_2shm_2classic_2server__session__impl_8hpp.html#af6058221697a416156e8cb50d4428820">CLASS_CLSC_SRV_SESSION_IMPL</a>&amp; val)</div>
<div class="line"><a id="l00370" name="l00370"></a><span class="lineno">  370</span>{</div>
<div class="line"><a id="l00371" name="l00371"></a><span class="lineno">  371</span>  <span class="keywordflow">return</span> os &lt;&lt; static_cast&lt;const typename CLASS_CLSC_SRV_SESSION_IMPL::Base&amp;&gt;(val);</div>
<div class="line"><a id="l00372" name="l00372"></a><span class="lineno">  372</span>}</div>
<div class="line"><a id="l00373" name="l00373"></a><span class="lineno">  373</span> </div>
<div class="line"><a id="l00374" name="l00374"></a><span class="lineno">  374</span><span class="preprocessor">#undef CLASS_CLSC_SRV_SESSION_IMPL</span></div>
<div class="line"><a id="l00375" name="l00375"></a><span class="lineno">  375</span><span class="preprocessor">#undef TEMPLATE_CLSC_SRV_SESSION_IMPL</span></div>
<div class="line"><a id="l00376" name="l00376"></a><span class="lineno">  376</span> </div>
<div class="line"><a id="l00377" name="l00377"></a><span class="lineno">  377</span>} <span class="comment">// namespace ipc::session::shm::classic</span></div>
<div class="ttc" id="aclassipc_1_1session_1_1Server__session__impl_html"><div class="ttname"><a href="classipc_1_1session_1_1Server__session__impl.html">ipc::session::Server_session_impl</a></div><div class="ttdoc">Internal, non-movable pImpl-lite implementation of Server_session_mv class template.</div><div class="ttdef"><b>Definition:</b> <a href="ipc__session_2src_2ipc_2session_2detail_2server__session__impl_8hpp_source.html#l00185">server_session_impl.hpp:188</a></div></div>
<div class="ttc" id="aclassipc_1_1session_1_1Session__base_html_a638232ef74a0eb80aeb4f027ee06f9bf"><div class="ttname"><a href="classipc_1_1session_1_1Session__base.html#a638232ef74a0eb80aeb4f027ee06f9bf">ipc::session::Session_base::Channels</a></div><div class="ttdeci">std::vector&lt; Channel_obj &gt; Channels</div><div class="ttdoc">See Session_mv. Note: If changed from vector please update those doc headers too.</div><div class="ttdef"><b>Definition:</b> <a href="session__base_8hpp_source.html#l00122">session_base.hpp:122</a></div></div>
<div class="ttc" id="aclassipc_1_1session_1_1Session__base_html_ace4dab42adec6354cc66081dd218ac71"><div class="ttname"><a href="classipc_1_1session_1_1Session__base.html#ace4dab42adec6354cc66081dd218ac71">ipc::session::Session_base::Mdt_reader_ptr</a></div><div class="ttdeci">boost::shared_ptr&lt; typename transport::struc::schema::Metadata&lt; Mdt_payload_obj &gt;::Reader &gt; Mdt_reader_ptr</div><div class="ttdoc">See Session_mv (or Session concept).</div><div class="ttdef"><b>Definition:</b> <a href="session__base_8hpp_source.html#l00128">session_base.hpp:129</a></div></div>
<div class="ttc" id="aclassipc_1_1session_1_1shm_1_1classic_1_1Server__session__impl_html"><div class="ttname"><a href="classipc_1_1session_1_1shm_1_1classic_1_1Server__session__impl.html">ipc::session::shm::classic::Server_session_impl</a></div><div class="ttdoc">Core internally-used implementation of shm::classic::Server_session: it is to the latter what its pub...</div><div class="ttdef"><b>Definition:</b> <a href="ipc__shm_2src_2ipc_2session_2detail_2shm_2classic_2server__session__impl_8hpp_source.html#l00067">server_session_impl.hpp:72</a></div></div>
<div class="ttc" id="aclassipc_1_1session_1_1shm_1_1classic_1_1Server__session__impl_html_a3c210b4b0acb3edebfa3fd735f02a854"><div class="ttname"><a href="classipc_1_1session_1_1shm_1_1classic_1_1Server__session__impl.html#a3c210b4b0acb3edebfa3fd735f02a854">ipc::session::shm::classic::Server_session_impl::~Server_session_impl</a></div><div class="ttdeci">~Server_session_impl()</div><div class="ttdoc">See Session concept counterpart; but read on for notes on per-session SHM-pool cleanup.</div></div>
<div class="ttc" id="aclassipc_1_1session_1_1shm_1_1classic_1_1Server__session__impl_html_a9c78b2c35b853e1702a06ec451545945"><div class="ttname"><a href="classipc_1_1session_1_1shm_1_1classic_1_1Server__session__impl.html#a9c78b2c35b853e1702a06ec451545945">ipc::session::shm::classic::Server_session_impl::async_accept_log_in</a></div><div class="ttdeci">void async_accept_log_in(Session_server_impl_t *srv, typename Base::Base::Channels *init_channels_by_srv_req, typename Base::Base::Mdt_reader_ptr *mdt_from_cli_or_null, typename Base::Base::Channels *init_channels_by_cli_req, Cli_app_lookup_func &amp;&amp;cli_app_lookup_func, Cli_namespace_func &amp;&amp;cli_namespace_func, Pre_rsp_setup_func &amp;&amp;pre_rsp_setup_func, N_init_channels_by_srv_req_func &amp;&amp;n_init_channels_by_srv_req_func, Mdt_load_func &amp;&amp;mdt_load_func, Task_err &amp;&amp;on_done_func)</div><div class="ttdoc">For use by internal user Session_server: See Server_session_mv counterpart.</div><div class="ttdef"><b>Definition:</b> <a href="ipc__shm_2src_2ipc_2session_2detail_2shm_2classic_2server__session__impl_8hpp_source.html#l00206">server_session_impl.hpp:207</a></div></div>
<div class="ttc" id="aclassipc_1_1session_1_1shm_1_1classic_1_1Session__impl_html"><div class="ttname"><a href="classipc_1_1session_1_1shm_1_1classic_1_1Session__impl.html">ipc::session::shm::classic::Session_impl</a></div><div class="ttdoc">Common data and logic for shm::classic::Server_session_impl and shm::classic::Client_session_impl.</div><div class="ttdef"><b>Definition:</b> <a href="src_2ipc_2session_2detail_2shm_2classic_2session__impl_8hpp_source.html#l00043">session_impl.hpp:44</a></div></div>
<div class="ttc" id="aclassipc_1_1transport_1_1struc_1_1shm_1_1Builder__base_html_a2dae5df49d355c6f2199af42fff9befd"><div class="ttname"><a href="classipc_1_1transport_1_1struc_1_1shm_1_1Builder__base.html#a2dae5df49d355c6f2199af42fff9befd">ipc::transport::struc::shm::Builder_base::S_MAX_SERIALIZATION_SEGMENT_SZ</a></div><div class="ttdeci">static constexpr size_t S_MAX_SERIALIZATION_SEGMENT_SZ</div><div class="ttdoc">A message of this size will be able to completely contain the (single) segment emitted by Builder::em...</div><div class="ttdef"><b>Definition:</b> <a href="ipc__shm_2src_2ipc_2transport_2struc_2shm_2serializer_8hpp_source.html#l00046">serializer.hpp:46</a></div></div>
<div class="ttc" id="aclassipc_1_1util_1_1Shared__name_html_a48f20b7b54490aa10dc64081d34c55b2"><div class="ttname"><a href="classipc_1_1util_1_1Shared__name.html#a48f20b7b54490aa10dc64081d34c55b2">ipc::util::Shared_name::ct</a></div><div class="ttdeci">static Shared_name ct(const Source &amp;src)</div><div class="ttdoc">Copy-constructs from a char-sequence container (including string, util::String_view,...</div><div class="ttdef"><b>Definition:</b> <a href="shared__name_8hpp_source.html#l00674">shared_name.hpp:674</a></div></div>
<div class="ttc" id="aclassipc_1_1util_1_1Shared__name_html_a4c294e23753eb706b4c297d99d24cd48"><div class="ttname"><a href="classipc_1_1util_1_1Shared__name.html#a4c294e23753eb706b4c297d99d24cd48">ipc::util::Shared_name::S_RESOURCE_TYPE_ID_SHM</a></div><div class="ttdeci">static const Shared_name S_RESOURCE_TYPE_ID_SHM</div><div class="ttdoc">Relative-folder fragment (no separators) identifying the resource type for: SHM pools.</div><div class="ttdef"><b>Definition:</b> <a href="shared__name_8hpp_source.html#l00312">shared_name.hpp:312</a></div></div>
<div class="ttc" id="aclassipc_1_1util_1_1Shared__name_html_aaa78ddb3efa5abe4fa80058dedbef68c"><div class="ttname"><a href="classipc_1_1util_1_1Shared__name.html#aaa78ddb3efa5abe4fa80058dedbef68c">ipc::util::Shared_name::S_1ST_OR_ONLY</a></div><div class="ttdeci">static const Shared_name S_1ST_OR_ONLY</div><div class="ttdoc">A Shared_name fragment, with no S_SEPARATOR characters inside, that represents a path component that ...</div><div class="ttdef"><b>Definition:</b> <a href="shared__name_8hpp_source.html#l00309">shared_name.hpp:309</a></div></div>
<div class="ttc" id="aipc__session_2src_2ipc_2session_2detail_2server__session__impl_8hpp_html"><div class="ttname"><a href="ipc__session_2src_2ipc_2session_2detail_2server__session__impl_8hpp.html">server_session_impl.hpp</a></div></div>
<div class="ttc" id="aipc__shm_2src_2ipc_2session_2detail_2shm_2classic_2server__session__impl_8hpp_html_a9489a474616f58c0d13630cfaa0c7741"><div class="ttname"><a href="ipc__shm_2src_2ipc_2session_2detail_2shm_2classic_2server__session__impl_8hpp.html#a9489a474616f58c0d13630cfaa0c7741">TEMPLATE_CLSC_SRV_SESSION_IMPL</a></div><div class="ttdeci">#define TEMPLATE_CLSC_SRV_SESSION_IMPL</div><div class="ttdoc">Internally used macro; public API users should disregard (same deal as in struc/channel....</div><div class="ttdef"><b>Definition:</b> <a href="ipc__shm_2src_2ipc_2session_2detail_2shm_2classic_2server__session__impl_8hpp_source.html#l00192">server_session_impl.hpp:192</a></div></div>
<div class="ttc" id="aipc__shm_2src_2ipc_2session_2detail_2shm_2classic_2server__session__impl_8hpp_html_af6058221697a416156e8cb50d4428820"><div class="ttname"><a href="ipc__shm_2src_2ipc_2session_2detail_2shm_2classic_2server__session__impl_8hpp.html#af6058221697a416156e8cb50d4428820">CLASS_CLSC_SRV_SESSION_IMPL</a></div><div class="ttdeci">#define CLASS_CLSC_SRV_SESSION_IMPL</div><div class="ttdoc">Internally used macro; public API users should disregard (same deal as in struc/channel....</div><div class="ttdef"><b>Definition:</b> <a href="ipc__shm_2src_2ipc_2session_2detail_2shm_2classic_2server__session__impl_8hpp_source.html#l00195">server_session_impl.hpp:195</a></div></div>
<div class="ttc" id="anamespaceipc_1_1session_1_1error_html_a0708d4bec9ae853f4d7e3d7822fc8f2fafe29343445a7bf167cc186a44bd2c6ed"><div class="ttname"><a href="namespaceipc_1_1session_1_1error.html#a0708d4bec9ae853f4d7e3d7822fc8f2fafe29343445a7bf167cc186a44bd2c6ed">ipc::session::error::Code::S_OBJECT_SHUTDOWN_ABORTED_COMPLETION_HANDLER</a></div><div class="ttdeci">@ S_OBJECT_SHUTDOWN_ABORTED_COMPLETION_HANDLER</div><div class="ttdoc">Async completion handler is being called prematurely, because underlying object is shutting down,...</div></div>
<div class="ttc" id="anamespaceipc_1_1session_1_1shm_1_1classic_html"><div class="ttname"><a href="namespaceipc_1_1session_1_1shm_1_1classic.html">ipc::session::shm::classic</a></div><div class="ttdoc">Support for SHM-backed ipc::session sessions and session-servers with the SHM-classic (ipc::shm::clas...</div><div class="ttdef"><b>Definition:</b> <a href="session_2detail_2shm_2classic_2classic__fwd_8hpp_source.html#l00023">classic_fwd.hpp:24</a></div></div>
<div class="ttc" id="anamespaceipc_1_1session_1_1shm_1_1classic_html_a302c6f293732270b584f94193ffac1b8"><div class="ttname"><a href="namespaceipc_1_1session_1_1shm_1_1classic.html#a302c6f293732270b584f94193ffac1b8">ipc::session::shm::classic::SHM_SUBTYPE_PREFIX</a></div><div class="ttdeci">const Shared_name SHM_SUBTYPE_PREFIX</div><div class="ttdoc">Internally used in pool names generated in this namespace to differentiate from those of other SHM-su...</div><div class="ttdef"><b>Definition:</b> <a href="ipc__shm_2src_2ipc_2session_2detail_2shm_2classic_2session__shared__name_8cpp_source.html#l00027">session_shared_name.cpp:27</a></div></div>
<div class="ttc" id="anamespaceipc_1_1session_1_1shm_1_1classic_html_ae28750f5d14a8ec78ea4d5310e212482"><div class="ttname"><a href="namespaceipc_1_1session_1_1shm_1_1classic.html#ae28750f5d14a8ec78ea4d5310e212482">ipc::session::shm::classic::operator&lt;&lt;</a></div><div class="ttdeci">std::ostream &amp; operator&lt;&lt;(std::ostream &amp;os, const Session_impl&lt; Session_impl_t &gt; &amp;val)</div><div class="ttdoc">Prints string representation of the given Session_impl to the given ostream.</div><div class="ttdef"><b>Definition:</b> <a href="src_2ipc_2session_2detail_2shm_2classic_2session__impl_8hpp_source.html#l00412">session_impl.hpp:412</a></div></div>
<div class="ttc" id="anamespaceipc_1_1session_html_a365d2d63f77b738e67e206af6b702634"><div class="ttname"><a href="namespaceipc_1_1session.html#a365d2d63f77b738e67e206af6b702634">ipc::session::build_conventional_shared_name</a></div><div class="ttdeci">Shared_name build_conventional_shared_name(const Shared_name &amp;resource_type, const Shared_name &amp;srv_app_name, const Shared_name &amp;srv_namespace, const Shared_name &amp;cli_app_name, const Shared_name &amp;cli_namespace_or_sentinel)</div><div class="ttdoc">Builds an absolute name according to the path convention explained in Shared_name class doc header; t...</div><div class="ttdef"><b>Definition:</b> <a href="ipc__session_2src_2ipc_2session_2detail_2session__shared__name_8cpp_source.html#l00043">session_shared_name.cpp:44</a></div></div>
<div class="ttc" id="anamespaceipc_1_1util_html_abda2ce5bcdbc26ca63d667b87818439c"><div class="ttname"><a href="namespaceipc_1_1util.html#abda2ce5bcdbc26ca63d667b87818439c">ipc::util::shared_resource_permissions</a></div><div class="ttdeci">Permissions shared_resource_permissions(Permissions_level permissions_lvl)</div><div class="ttdoc">Maps general Permissions_level specifier to low-level Permissions value, when the underlying resource...</div><div class="ttdef"><b>Definition:</b> <a href="ipc__core_2src_2ipc_2util_2util_8cpp_source.html#l00037">util.cpp:37</a></div></div>
<div class="ttc" id="anamespaceipc_1_1util_html_ad1ca1cab79a35e1eb1c47037a0973cd8"><div class="ttname"><a href="namespaceipc_1_1util.html#ad1ca1cab79a35e1eb1c47037a0973cd8">ipc::util::CREATE_ONLY</a></div><div class="ttdeci">const Create_only CREATE_ONLY</div><div class="ttdoc">Tag value indicating an atomic create-unless-exists-else-fail operation.</div><div class="ttdef"><b>Definition:</b> <a href="ipc__core_2src_2ipc_2util_2util_8cpp_source.html#l00032">util.cpp:32</a></div></div>
<div class="ttc" id="anamespaceipc_html_aa3192e586cc45d3e7c22463bf2760f89"><div class="ttname"><a href="namespaceipc.html#aa3192e586cc45d3e7c22463bf2760f89">ipc::Error_code</a></div><div class="ttdeci">flow::Error_code Error_code</div><div class="ttdoc">Short-hand for flow::Error_code which is very common.</div><div class="ttdef"><b>Definition:</b> <a href="common_8hpp_source.html#l00298">common.hpp:298</a></div></div>
<div class="ttc" id="asession_2detail_2shm_2classic_2classic__fwd_8hpp_html"><div class="ttname"><a href="session_2detail_2shm_2classic_2classic__fwd_8hpp.html">classic_fwd.hpp</a></div></div>
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